BIGTREETECH Octopus V1.1 Control Board 32bit Compatible TFT Series Screen, Support DIY Klipper Firmware and Raspberry-Pi Online Printing for Voron V2.4 Upgrade 3D Printer (with 8Pcs TMC2209)

Main Control ChipUses a 32-bit ARM Cortex-M4 series STM32F446ZET6 main control chip with a core frequency of 180MHz.
Strong DIY SupportThis motherboard supports up to 8 stepper drivers with 9 stepper driver outputs in total; And up to 6 PWM fans and 2 always-on fans with the ability to individually select the voltage rail that will drive each fan. Select from Vin, 12V or 5V.
Motherboard Expansion FunctionSupport BLTouch, locked-rotor detection, shutdown after printing, resume printing after power failure, CAN bus, U disk function, IIC expansion; at the same time reserved WIFI interface, PT100 thermistor interface (optional), dual Z-axis printer.
TMC2209 Driver FeaturesThe TMC2209 stepper driver is not easy to lose steps and is in an ultra-quiet mode; the module has a large area of heat dissipation pad, which can reduce the temperature of the driver when it is working; the module supports three modes: STEP / DIR and UART.
TMC2209 Driver ModeTMC Motor drivers can be used in SPI or UART mode by simply adjusting the onboard jumpers beneath each motor driver. Additionally you can connect or disconnect the TMC DIAG pin using an onboard jumper allowing you to use hard endstops or sensorless homing without the need to cut any pins.